WO2016052982A1 - 섬유 제조용 폴리올레핀 중합체의 제조방법 - Google Patents
섬유 제조용 폴리올레핀 중합체의 제조방법 Download PDFInfo
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- WO2016052982A1 WO2016052982A1 PCT/KR2015/010296 KR2015010296W WO2016052982A1 WO 2016052982 A1 WO2016052982 A1 WO 2016052982A1 KR 2015010296 W KR2015010296 W KR 2015010296W WO 2016052982 A1 WO2016052982 A1 WO 2016052982A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F4/00—Polymerisation catalysts
- C08F4/06—Metallic compounds other than hydrides and other than metallo-organic compounds; Boron halide or aluminium halide complexes with organic compounds containing oxygen
- C08F4/12—Metallic compounds other than hydrides and other than metallo-organic compounds; Boron halide or aluminium halide complexes with organic compounds containing oxygen of boron, aluminium, gallium, indium, thallium or rare earths
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F4/00—Polymerisation catalysts
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
- C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
- C08F4/62—Refractory metals or compounds thereof
- C08F4/64—Titanium, zirconium, hafnium or compounds thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F4/00—Polymerisation catalysts
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
- C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
- C08F4/62—Refractory metals or compounds thereof
- C08F4/64—Titanium, zirconium, hafnium or compounds thereof
- C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
- C08F4/6592—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
Definitions
- the present application is the Korean Patent Application No. 10-2014-0131858 dated September 30, 2014 and
- the present invention relates to a method for producing a polyolefin polymer for producing fibers having a high molecular weight and a narrow molecular weight distribution and having a high strength and a high draw ratio.
- high density polyethylene In order to produce fibers of high strength yarns such as ropes, fishing nets, and the like, high density polyethylene is used, and the high density polyethylene requires properties such as high stretching and high strength.
- the narrower the molecular weight distribution of the high density polyethylene the better the mechanical properties. That is, when the molecular weight distribution of the high density polyethylene is narrow, the draw ratio has a large characteristic, and the high draw enables high strength. However, if the molecular weight distribution of 3 ⁇ 4 ethylene in the high density poly is too narrow, there is a problem in that workability is very inferior.
- Polyethylene having a wide molecular weight distribution has the advantage of good processability, but has a disadvantage in that mechanical properties are lowered and low molecular weight parts are eluted during processing, thereby lowering the original properties of the resin.
- the existing method has a limitation in the amount of aluminoxane, which is a promoter to increase the catalytic activity, there is a disadvantage that the cost of the catalyst greatly increases due to the expensive promoter.
- the metallocene catalyst since the metallocene catalyst has a high hydrogen reactivity and beta-hydrogen elimination reaction, there is a limit in increasing the molecular weight. Therefore, when the existing method is applied, there is a problem that it is difficult to apply to a high rigid resin having a high molecular weight and a narrow molecular weight distribution, that is, a resin for fibers.
- the present invention provides a method for producing a polyolefin polymer for fiber production having a narrow molecular weight distribution and showing a range of medium molecular weight by polymerizing an olefin monomer using a specific common supported metallocene catalyst.
- this invention provides the manufacturing method of the polyolefin polymer for fiber manufacture which shows the outstanding strength and draw ratio.
- the present invention is a method for producing a polyolefin polymer for fiber production, comprising the step of polymerizing at least one olefin monomer in the presence of a common metallocene supported catalyst,
- the common metallocene supported catalyst is a cocatalyst supported on a carrier
- the bran I supporting the first metallocene compound of Formula 1 and the crab 2 metallocene compound of Formula 2, respectively;
- p is an integer of 0 or 1;
- M ' is a Group 4 transition metal
- R a and R b may be the same as or different from each other, and are each independently hydrogen, alkyl having 1 to 20 carbon atoms, alkoxyalkyl having 2 to 20 carbon atoms, cycloalkyl having 3 to 20 carbon atoms, aryl having 6 to 40 carbon atoms, and 2 carbon atoms.
- R 1 to R 17 are the same as or different from each other, and each independently hydrogen, halogen, an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, a cycloalkyl group having 2 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, An alkylaryl group having 7 to 20 carbon atoms or an arylalkyl group having 7 to 20 carbon atoms; Or R 1 to R 17 combine with each other to form a cycloalkyl group having 2 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, an alkylaryl group having 7 to 20 carbon atoms, or an arylalkyl group having 7 to 20 carbon atoms; At least one of R 1 to R 17 is a substituent other than hydrogen and halogen in the substituents,
- L is a linear or branched alkylene group having 1 to 10 carbon atoms
- D is -0-, -S-, -N (R 18 )-or -Si (R 19 ) (R 20 )-, wherein R 18 to R 20 are Are the same as or different from each other, and are each independently hydrogen, halogen, an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, or an aryl group having 6 to 20 carbon atoms,
- A is hydrogen, halogen, alkyl group having 1 to 20 carbon atoms, alkenyl group having 2 to 20 carbon atoms, aryl group having 6 to 20 carbon atoms, alkylaryl group having 7 to 20 carbon atoms, arylalkyl group having 7 to 20 carbon atoms, and 1 to 20 carbon atoms
- M is a Group 4 transition metal
- X 1 and X 2 are the same as or different from each other, and are each independently a halogen, an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, a nitro group, an amido group, and a carbon group having 1 to 20 carbon atoms.
- the second promoter is a borate-based promoter
- the molar ratio of boron included in the catalyst may be 1: 0.45 to 1: 3.
- the first promoter is an aluminoxane-based promoter or a trisubstituted aluminum or boron-containing promoter, and at least one selected from the compounds represented by the following Chemical Formulas 3 and 4 Can:
- R 18 may be the same as or different from each other, and each independently a halogen, or a hydrocarbyl having 1 to 20 carbon atoms unsubstituted or substituted with halogen, a is an integer of 2 or more,
- R 19 may be the same as or different from each other, and each independently halogen; A hydrocarbon having 1 to 20 carbon atoms or a hydrocarbon having 1 to 20 carbon atoms substituted with halogen, and D 1 is aluminum or boron.
- the second cocatalyst may be a borate cocatalyst, for example, a borate compound represented by the following Chemical Formula 5 or 6.
- L is each independently a neutral or cationic Lewis acid
- H is each independently a hydrogen atom
- Z is each independently boron
- A is independently at least one hydrogen is halogen, 1 carbon It is a C6-C20 aryl or alkyl group substituted by the hydrocarbyl group, the alkoxy group, the phenoxy group, nitrogen, phosphorus, sulfur, or the oxygen atom of 20 to 20.
- the second cocatalyst is trityl tetrakis (pentafluorophenyl) borate ⁇ , ⁇ -dimethylanilinium tetrakis (pentafluorophenyl) borate, trimethylammonium tetrakis (pentafluorophenyl) borate, triethylammonium It may be desirable to include tetrakis (pentafluorophenyl) borate or tripropylammonium tetrakis (pentafluorophenyl) borate.
- the carrier may contain a hydroxyl group and a siloxane group on the surface.
- the carrier is selected from silica ⁇ silica-alumina and silica-magnesia
- the olefin monomer may be ethylene, propylene, 1-butene, 1-pentene, 4-methyl-1-pentene,
- It may be one or more selected from the group consisting of 1-nucleene, 1-heptene, 1-octene, 1-decene, 1-undecene, 1-dodecene, 1-tetradecene, 1-nuxadecene, and isotocene.
- a polyolefin polymer for preparing a fiber having a weight average molecular weight of 100,000 to 300,000 and PDI 2.0 to 3.2 may be prepared.
- a polyolefin polymer having a tenacity of 9.0 to 15.0 (gf / denier) and a draw ratio of 7 to 15 times may be prepared according to ASTM D 638.
- a polyolefin polymer having a melt index (Ml; 190 ° C., 2.16 kg) of 0.1 to 2.0 g / 10 min and a density of 0.945 to 0.955 g / oif may be prepared.
- the polyolefin polymer has a melt index of 0.3 to 1.5 g / 10 min and a density from 0.945 to 0.955 g / cirf.
- the present invention also provides a fiber comprising a polyolefin polymer.
- the fiber may have a tenacity of 9.0 to 15.0 (gf / denier) and a draw ratio of 7 to 15 times as measured based on ASTM D 638.
- the fiber may have a tensile strength half-life of 230 to 320 hours when the tensile sensitivity decrease phenomenon is measured under the condition accelerated by Xenon-arc lamp by AATCC test method # 16.
- the present invention uses a common supported metallocene catalyst carrying different metallocene compounds and first and second cocatalysts for the (co) polymerization of leupin, thereby producing a polyolefin polymer having a medium molecular weight range and a narrow molecular weight distribution. can do.
- the present invention uses a borate-based compound in which the amount of use of the common supported metallocene catalyst as the second cocatalyst is limited to a specific range, thereby controlling the activity of the metallocene compound, thereby controlling the molecular weight distribution of the polyolefin. I can narrow it down. Therefore, the present invention can produce a fiber having superior mechanical properties and particularly excellent strength and draw ratio by using the polyolefin polymer.
- a method of producing an olefinic homopolymer for fiber manufacturing comprising the step of (co) polymerizing at least one of the olepin monomers, the common metal
- the rosene supported catalyst may include a first cocatalyst supported on a carrier, first and second metallocene compounds of the following Chemical Formulas 1 and 2; And a second cocatalyst, and before and after supporting the first cocatalyst on the carrier, supporting the first metallocene compound of Formula 1 and the second metallocene compound of Formula 2, respectively; And a step of supporting a borate-based crab 2 cocatalyst on a carrier.
- the present invention is characterized in that a multi-metallocene supported catalyst capable of producing a polyolefin polymer having a high molecular weight and a high molecular weight distribution with high catalytic activity is prepared and used in a method for preparing a polymer of polyolefin for fiber production. According to this method, the present invention can provide a polyolefin polymer having a medium molecular weight range and a narrow molecular weight distribution (PDI; Mw / Mn).
- PDI narrow molecular weight distribution
- the polyolefin polymer prepared by the method of the present invention may have a weight average molecular weight of 100,000 or more, or 150,000 or more, or 170,000 or more, 300,000 or less, or 200,000 or less, PDI 2.0 or more, or 2.2 or more.
- Black may be 2.5 or more, 3.2 or less, or 3.0 or less.
- the polyolefin polymer in the present invention is characterized in that the strength (tenacity) measured on the basis of ASTM D 638 is 9.0 to 15.0 (gf / denier), the draw ratio is 7 to 15 times, or 10 to 15 used in the manufacture of fibers. .
- the polyolefin polymer may have a melt index (Ml; 190 ° C., 2.16 kg) of 0.1 to 2.0 g / 10 min, and a density of 0.945 to 0.955 g / oif.
- the polyolefin polymer may have a melt index of 0.3 to 1.5 g / 10 min and a density of 0.945 to 0.955 g / ciu 3 .
- the polyolefin polymer is preferably a homopolymer.
- Such polyolefin polymers also have excellent catalytic activity and can be effectively used for fabrication of fibers having excellent high strength and high elongation ratio.
- the characteristics of the density, melt index and molecular weight distribution is used in the manufacture of high strength fiber products Related to the draw ratio, strength and processability expressed.
- the draw ratio is better the narrower the molecular weight distribution of the polyolefin homopolymer.
- the strength is excellent the greater the draw ratio, the higher the density at the same draw ratio, the greater the molecular weight.
- the molecular weight distribution should be narrow. However, if the molecular weight distribution is too narrow, the workability may be inferior, and thus, as described above, when the molecular weight distribution is 2 to 3.2, high stretching and proper processability may be realized.
- the higher the molecular weight that is, the smaller the melt index, the higher the strength, but when the molecular weight is too large, there is a problem that the extrusion processability and productivity are very inferior due to a large load on the processing equipment. Therefore, as described above, when the melt index is 0.1 to 2.0 g / 10 min, more preferably 0.3 to 1.5 g / 10 min, excellent workability characteristics can be exhibited.
- the polyolefin polymer according to the present invention is more preferably a homopolymer without using a comonomer.
- the melt index (Ml; 190 ° C, 2.16 kg) is 0.3 to 1.5 g / 10 min
- molecular weight distribution (PDI; Mw / Mn) is 2.0 to 3.2, it can exhibit the characteristics of high stretching and high strength of the optimization in the fiber.
- the eurefin-based polymer according to the present invention is an ethylene homopolymer, but may be a copolymer including ethylene and an alpha olefin comonomer as necessary.
- the alpha olefins include 1-butene, 1-pentene, 1-nuxene, 4-methyl-1-pentene, 1-octene, 1-decene, 1-dodecene, 1-tetradecene, 1-nuxadecene, 1 Octadecene or 1-eicosene, but is not limited thereto.
- alpha olefins having 4 to 10 carbon atoms are preferable, and one or several kinds of alpha olefins may be used together as a comonomer.
- the content of the alpha olefin comonomer in the copolymer is preferably 0.1 to 45% by weight, more preferably 0.1 to 20% by weight, most preferably 0.1 to 4% by weight.
- the polyolefin polymer according to the present invention has excellent processability, has a melt flow rate ratio (MFRR) value in a suitable range for processing, high elongation and high strength It can be used to produce high strength fiber with excellent properties. Meanwhile, in the present invention, the polyolefin polymer exhibiting the above physical properties may be prepared using a specific supported metallocene catalyst.
- the method for producing a multi-metallocene supported catalyst includes two or more metals having a ligand substituted with an alkoxide or the like before and after the step of supporting the first cocatalyst (for example, an organometallic compound including aluminum) on the carrier. Supporting each of the strong compounds.
- One example of such a supporting sequence may be to sequentially support the first metallocene compound, the first cocatalyst, and the second metallocene compound on the carrier, and another example of the supporting order may be a second metallocene on the carrier.
- the compound, the Crab 1 cocatalyst, and the Crab 1 metallocene compound may be sequentially supported.
- the basic catalyst structure includes one low molecular / high active catalyst and one high molecular catalyst.
- This catalyst structure is characterized by the ratio of each catalyst.
- the activity and molecular weight can be controlled.
- the catalytic activity is lowered and the molecular weight distribution is widened. was narrow but the molecular weight was low or the catalytic activity was low.
- the present invention adds a borate compound containing boron as a second cocatalyst component to prepare a supported catalyst. And, by adjusting the amount of the second cocatalyst component in a specific range, it is possible to produce a polyolefin polymer having a narrow molecular weight distribution while maintaining the properties of the multimetallocene catalyst.
- the order in which these second promoters are supported is not particularly limited and, for example, may be supported at any stage of the sequential support of the Crab 1 promoter and the 11 and the second metallocene compounds.
- the first promoter, the crab 1, and the second metallocene compound may be supported after all of them are supported.
- the present invention provides a polyolefin (preferably polyethylene) obtained by adding a borate compound as a second cocatalyst component to prepare a common supported metallocene catalyst and then using it for the (co) polymerization of an olefin monomer. It provides a method that can control the molecular weight distribution of and increase the catalytic activity.
- Polyolefins prepared using this technique have excellent mechanical properties, There is a characteristic suitable for the resin for fibers having excellent draw ratio.
- the common metallocene supported catalyst in the present invention may have the same meaning as the multimetallocene supported catalyst.
- the total metal moles contained in the metallocene catalyst in which the first metallocene compound and the crab 2 metallocene compound are combined : of boron included in the borate-based second cocatalyst
- the molar ratio may be greater than or equal to 1: 0.45, greater than or equal to 1: 0.8, or greater than or equal to 1: 1, less than or equal to 1: 3, less than or equal to 1: 2.8, and less than or equal to 1: 2. If the molar ratio is less than 1: 0.45, there is a problem in that the catalytic activity is lowered.
- M ' may be selected from the group consisting of titanium, zirconium, and hafnium, and Q may be selected from the group consisting of F, CI, Br, and I.
- the first metallocene compound may be a compound of Formula 1 a or Formula 1 b, but is not limited thereto.
- the alkyl group of To C 20 includes a linear or branched alkyl group, Specifically, a methyl group, an ethyl group, a propyl group, an isopropyl group, n-butyl group, tert-butyl group, a pentyl group, a nuclear chamber group, a heptyl group octyl group, etc. are mentioned.
- the alkenyl group of C 2 to C 20 includes a straight or branched alkenyl group, and specifically, an allyl group, an ethenyl group, a propenyl group, a butenyl group, a pentenyl group, and the like.
- the aryl groups of c 6 to c 20 include monocyclic or condensed aryl groups, and specifically include phenyl groups, biphenyl groups, naphthyl groups, phenanthrenyl groups, and fluorenyl groups.
- a heteroaryl group of the c 5 to c 20 comprises a monocyclic or fused ring heteroaryl group, carbazolyl group, pyridyl group, quinoline group, an isoquinoline group, a thiophenyl group, furanoid group, an imidazole group, oxazolyl group, thiazolyl A zolyl group, a triazine group, a tetrahydropyranyl group, a tetrahydrofuranyl group, and the like.
- the alkoxy group in the C 20 to have such time meteuk., Erok group, phenyl-oxy group, a cycloalkyl nuclear -1,3 time.
- the Group 4 transition metals include titanium, zirconium, hafnium and the like.
- R1 to R17 of Formula 2 may each independently represent hydrogen, methyl, ethyl, propyl, isopropyl, n-butyl, tert-butyl, pentyl, nucleosil, heptyl, octyl, or phenyl groups. have.
- L of Formula 2 is more preferably a straight or branched chain alkylene group of C 4 to C 8 , but is not limited thereto.
- the alkylene group may be unsubstituted or substituted with an alkyl group of d to C 20 , an alkenyl group of C 2 to C 20 , or an aryl group of C 6 to C 20 .
- a of Formula 2 is hydrogen, methyl group, ethyl group, propyl group, isopropyl group, ⁇ -butyl group, tert-butyl group, methoxymethyl group, tert- hydroxymethyl group, 1- ethoxy ethyl group, 1-methyl _1_ It may be a methoxyethyl group, tetrahydropyranyl group, or tetrahydrofuranyl group.
- Examples of the metallocene compound of Chemical Formula 2 of the present invention include, but are not limited to, a compound represented by the following Chemical Formula 2a.
- the supported amount of the crab 1 metallocene compound and the second metallocene compound may be at least 0.01 mmol, or at least 0.05 mmol, at least 0.1 mmol, and at most 3 mmol, based on 1 g of the carrier. 1 mmol or less, or 0.5 mm or less.
- the carrier for supporting the first metallocene compound and the second metallocene compound may contain a hydroxyl group on the surface.
- the amount of the hydroxy group can be controlled by the preparation method and conditions of the carrier or the drying conditions (temperature, time, drying method, etc.).
- the amount of hydroxyl groups on the surface of the carrier is preferably 0.1 to 10 mmol / g, more preferably 0.5 to 1 mm / g.
- the reaction space with the promoter decreases. If the amount of the hydroxy group exceeds 10 mm / g, the reaction may be due to moisture other than the hydroxyl group present on the surface of the carrier. not.
- a carrier having a large semi-aromatic siloxane group participating in the support may be chemically removed while preserving the hydroxy group.
- the carrier has both a highly reactive hydroxyl group and a siloxane group on its surface.
- examples of such carriers are those dried at high temperatures.
- Silica, silica-alumina, or silica-magnesia, and the like which may typically contain an oxide, carbonate, sulfate or nitrate component such as Na 2 O, K 2 CO 3, BaS0 4 , or Mg (N0 3 ) 2 . .
- the carrier may be used in a completely dried state before supporting the first and second cocatalysts.
- the drying temperature of the carrier is preferably 200 to 800 ° C., more preferably 300 to 60 CTC, most preferably 400 to 600 ° C. If the drying temperature of the carrier is less than 200 ° C, there is too much moisture to react with the surface water and the promoter, and if it exceeds 800 ° C, the surface area decreases as the pores on the surface of the carrier are combined, and the surface is hydroxy on the surface. It is not preferable because there are not many groups and only siloxane groups are left to decrease the reaction site with the promoter.
- the common metallocene catalyst of the present invention may include a crab 1 co-catalyst and a second co-catalyst for making the active species of the catalyst.
- the use of the two cocatalysts improves the catalyst " properties and, in particular, the use of the crab 2 promoter to control the molecular weight distribution of the polyolefin.
- the first cocatalyst may be used as long as it is a cocatalyst used when polymerizing olefins under a general metallocene catalyst. This cocatalyst allows a bond to be produced between the hydroxy group and the transition metal in the carrier.
- the first cocatalyst may be present only on the surface of the carrier, thereby contributing to securing the inherent characteristics of the specific catalytic catalyst composition of the present application without the fouling phenomenon in which the polymer particles are entangled with the wall of the semi-ungunggi or each other.
- the first cocatalyst may be at least one selected from compounds represented by the following Chemical Formulas 3 and 4:
- R 18 may be the same as or different from each other, and each independently represent a halogen or a hydrocarbyl having 1 to 20 carbon atoms unsubstituted or substituted with halogen, a is an integer of 2 or more, R 19 may be the same as or different from each other, and each independently halogen; A hydrocarbon having 1 to 20 carbon atoms or a hydrocarbon having 1 to 20 carbon atoms substituted with halogen, and D 1 is aluminum or boron.
- Examples of the compound represented by the formula (3) include methyl aluminoxane, ethyl aluminoxane, isobutyl aluminoxane, butyl aluminoxane and the like, and more preferred compound is methyl aluminoxane.
- Examples of the compound represented by Formula 4 include trimethyl aluminum, triethyl aluminum, triisobutyl aluminum, tripropyl aluminum, tributyl aluminum, dimethylchloro aluminum, triisopropyl aluminum, tri _s_butyl aluminum, tricyclopentyl aluminum, Tripentyl aluminum, triisopentyl aluminum, trinuclear silaluminum, trioctyl aluminum, ethyl dimethyl aluminum, methyl diethyl aluminum, triphenyl aluminum, tri-P- aryl aluminum, dimethyl aluminum hydroxide, dimethyl aluminum ethoxide, trimethyl boron , Triethyl boron, triisobutyl boron, tripropyl boron, tributyl boron, and the like, and more preferable compounds are selected from trimethyl aluminum, triethyl aluminum, and triisobutyl aluminum.
- the cocatalyst 12 included in the common supported metallocene catalyst may
- L is each independently a neutral or cationic Lewis acid
- H is each independently a hydrogen atom
- Z is each independently boron
- A Are each independently a aryl or alkyl group having 6 to 20 carbon atoms in which one or more hydrogens are substituted with halogen, a hydrocarbyl group having 1 to 20 carbon atoms, an alkoxy group, a phenoxy group, nitrogen, phosphorus, sulfur or an oxygen atom.
- the borate-based second cocatalyst is trityl tetrakis (pentafluorophenyl) borate,
- the supporting order of each component is, before and after the step of supporting the first cocatalyst on the carrier, as described above, the first metallocene compound and the formula Supporting each of the crab 2 metallocene compounds of 2; And supporting the second cocatalyst on the carrier.
- the common metallocene supported catalyst of the present invention is the first cocatalyst supported on the carrier, First and second metallocene compounds; And a second promoter.
- the supporting conditions are not particularly limited and can be carried out in a range well known to those skilled in the art.
- the high temperature support and the low temperature support may be appropriately used, and specifically, when the first and second cocatalysts are supported on the carrier, the temperature conditions may be 25 to 100 ° C.
- the supporting time of the crab 1 promoter and the supporting time of the second promoter can be appropriately adjusted according to the amount of the promoter to be supported.
- the reaction temperature between the first and second metallocene compounds and the carrier may be up to -30 ° C to 150 ° C, preferably from room temperature to 100 ° C, more preferably from 30 to 80 ° C.
- the supported catalyst can be used as it is by removing the solvent by distillation under reduced pressure by filtration or by distillation under reduced pressure.
- the olefin monomers used in the (co) polymerization of the olepin monomers are ethylene, propylene, 1-butene, 1-pentene, 4-methyl-1-pentene, 1-nuxene, 1-heptene, 1-octene, 1- It may be at least one member selected from the group consisting of tessen, 1-undecene, 1-dodecene, 1-tetradecene, 1-nuxadecene and 1-aitocene.
- the metallocene supported catalyst is aliphatic hydrocarbon solvent of 5 to 12 carbon atoms such as isobutane, pentane, nucleic acid, heptane, nonane, decane and isomers thereof, toluene and Aromatic hydrocarbon solvents such as benzene; Dilution in the form of a slurry in hydrocarbon solvents substituted with chlorine atoms such as dichloromethane and chlorobenzene may be carried out.
- the solvent is treated with a small amount of aluminum It is preferable to remove and use a small amount of water, air and the like acting as a catalyst poison.
- Polymerization of the olefinic monomers may be carried out by using a semi-reactor, which is selected from the group consisting of a continuous slurry polymerization reactor, a loop slurry reactor, a gaseous reaction reactor, and a solution reaction reactor, or by using two or more identical or different reaction reactors, respectively. It can be carried out according to the law while continuously supplying at a constant rate.
- the polymerization silver degree is preferably 25 to 500 ° C., more preferably 25 to 200 ° C., more preferably 50 to 150 ° C.
- the polymerization pressure is preferably performed at 1 to 100 Kgf / cm 2 , more preferably 1 to 70 Kgf / cm 2 , and most preferably 5 to 50 Kgf / cm 2 .
- the fiber comprising the olefin-based polymer the strength (tenacity) measured on the basis of ASTM D 638 is 9.0 to 15.0 (gf / denier), the draw ratio is provided 7 to 15 times do.
- Conventionally used general-purpose fiber has a strength (tenacity) of 4 to 6 gf / denler, the draw ratio is only 7 to 9 times, the fiber according to the present invention exhibits the strength and draw ratio as described above, very high strength And it can be seen that it has the characteristics of high stretching.
- a narrow molecular weight distribution is required in order to exhibit high strength in a fiber such as a monofilament product, and in order to realize a narrow molecular weight distribution, a olefinic polymer for monofilament is prepared using a kind of catalyst precursor.
- a olefinic polymer for monofilament is prepared using a kind of catalyst precursor.
- the molecular weight distribution of the olefin polymer can be narrowed, mechanical properties can be improved and strength can be enhanced.
- Fiber according to the present invention is a high-strength, lightweight product, because it can reduce the amount of resin used in the production of the fiber showing the same strength, not only can reduce the production cost, it is also characterized by reducing the weight of the product.
- such a fiber of the present invention may have a tensile strength half-life of 230 to 320 hours when the tensile sensitivity decrease phenomenon is measured under the condition accelerated by the Xenon-arc lamp by AATCC test method # 16. That is, in the present invention, the tensile sensitivity half-life of the fiber In this case, the AATCC method # 16 used for the discoloration test is a value measured by confirming the decrease in tensile strength against ultraviolet rays. The present invention is also the result of testing accelerated to xenon-arc lamps under more severe conditions.
- the present invention can provide a very excellent fiber because it exhibits a half-life of the above range longer than the conventional.
- the present invention provides a method for producing a fiber using a resin composition comprising the polyolefin polymer, and including a processing step by an extruder.
- the resin composition containing the leupin polymer may include other additives.
- additives include heat stabilizers, antioxidants, UV absorbers, light stabilizers, metal inerts, layering agents, reinforcing agents, plasticizers, lubricants, emulsifiers, pigments, optical bleaches, flame retardants, antistatic crabs, foaming agents, and the like.
- the kind of the additive is not particularly limited, and a general additive known in the art may be used.
- the present invention can provide an article comprising the fiber.
- the article including the fiber as an article that can be manufactured using high-strength yarn, such as monofilament products such as ropes, fishing nets, safety nets, sports nets, tarpaulin products such as covers, stools, hoses, tents, etc. Can be.
- high-strength yarn such as monofilament products such as ropes, fishing nets, safety nets, sports nets, tarpaulin products such as covers, stools, hoses, tents, etc.
- a common supported metallocene catalyst was prepared using N, N-dimethylanilinium tetrakis (pentafluorophenyl) borate. At this time, the content ratio of each component was used as Table 1 below.
- toluene solution 100 m £ of toluene solution was added to a glass reaction machine, and 10 g of prepared silica was added thereto, followed by stirring while lowering the reactor temperature to 60 ° C. After the silica was sufficiently dispersed, the metallocene catalyst of Chemical Formula 1a was added thereto, followed by stirring for 2 hours. The stirring was stopped and 53.1 of methylaluminoxane (MAO) / luene solution was added thereto, followed by stirring at 80 ° C. at 200 rpm for 16 hours. Thereafter, the temperature was lowered to 40 ° C. and washed with a sufficient amount of toluene to remove unreacted aluminum, compound.
- MAO methylaluminoxane
- N, ⁇ -dimethylaniliniumtetrakis (pentafluorophenyl) borate was dissolved in the molar number of Table 1 below, and then in a reactor containing the supported catalyst (silica supported with methylaluminoxane and two metallocene catalysts). Input.
- toluene was added to the reaction vessel about 50 more to adjust the total amount of solution to about 150, and then stirred at 200 rpm for 1 hour at 80 ° C. Subsequently, the catalyst was allowed to settle, the toluene layer was separated and removed, and then the remaining toluene was removed by reducing the pressure at 40 ° C.
- the mixed solution was further stirred for about 2 hours to react. After the reaction was completed, the stirring was stopped, the toluene layer was separated and removed, and the remaining metalluene supported catalyst was prepared by removing the remaining toluene under reduced pressure at 40 ° C.
- ethylene was polymerized to prepare polyethylene.
- 20 mg of each common supported metallocene catalyst was quantified in a dry box, and each was placed in 50 glass bottles, sealed with a rubber diaphragm, and taken out of the dry box to prepare a catalyst to be injected.
- Olefin polymerization was carried out in one bimetallic alloy reactor equipped with a temperature control device equipped with a mechanical stirrer and used at high pressure.
- each metallocene supported catalyst was added to a single loop slurry polymerization process to prepare high density polyethylene according to a conventional method.
- homopolymerization was carried out without using a comonomer.
- Polyethylene was prepared in the same manner as in Example 1, except that the second promoter was not used.
- the physical properties of the polyethylene was evaluated by the method of Example 1 and the results are shown in Table 1. Table 1
- Met1 is a ' 1 metallocene compound
- Met2 is a second metallocene compound
- the present invention uses a borate compound as a second cocatalyst during the olefin (co) polymerization, and uses a common metallocene supported catalyst whose content is controlled, thereby having higher catalytic activity than before.
- Polyethylenes having a medium molecular weight range and satisfying both narrow molecular weight distribution properties could be prepared.
- Tensile strength half-life was measured by identifying the decrease in tensile strength against ultraviolet rays by AATCC Method # 16, which is used for discoloration test. The test was accelerated with a xenon-arc lamp and the results are shown in Table 2.
- Draw ratio fold: When processing yarn (filament or yarn), there is a process of drawing to increase the strength. At this time, the draw ratio is called draw ratio.
- the draw ratio was measured by the rotational speed (RPM 2 ) and the feed rate by the rotational speed (PRM) ratio ⁇ ⁇ / [ ⁇ nowadays ⁇ .
- Tenacity refers to the breaking strength of the yarn, measured according to ASTM D 638. At this time, the test speed was 200 mm / min.
- denier is an international unit used to indicate the thickness of a yarn.
- the denier is 1,000 m in standard length at 9,000 m.
- Example 5 14 13 295
- Example 6 13 12 289
- Example 7 10 9
- Example 8 15 15 307 Comparative Example 1 8 7 245
- Comparative Example 1 was prepared using a common supported catalyst that does not include a borate-based cocatalyst, and thus could not produce fibers of high strength yarns having low draw ratios and strengths and low tensile strength half-lives.
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JP2017509002A JP6466566B2 (ja) | 2014-09-30 | 2015-09-30 | 繊維製造用ポリオレフィン重合体の製造方法 |
US15/511,944 US10280239B2 (en) | 2014-09-30 | 2015-09-30 | Method for preparing polyolefin polymer for fiber production |
CN201580048956.1A CN107075007B (zh) | 2014-09-30 | 2015-09-30 | 用于纤维生产的聚烯烃聚合物的制备方法 |
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